Mechanical movement



J.- E. UNDERW'O-OD',

! (No Model.) L Mechanical Movement.

No. 229295. Patented June 29, 1880.

FEW

llll lllllt [I ll lmi NH UNITED STATES PATENT OFFICE,

JAMES E. UNDERWOOD, OF TOLLAND, CONNECTICUT.

MECHANICAL MOVEMENT.

SPECIFICATION forming part of Letters Patent No. 229,295, dated June 29,1880.

Application filed April 17,1880. (No model.)

To all whom it may concern Be it known that I, JAMES E. UNDERWOOD, ofTolland,in the county of Tolland and State of Connecticut, have inventeda certain new and useful Improvement in aMechanical Movement forTransmitting Rotary Motion, of which the following is a description,reference being had to accompanying drawings, where- Figure 1 is whatmay be termed a front view of the device. Fig. 2 is a side view; it cutsthe driving-shaft in section on the plane co m, Fig. 1.

The purposes of the invention are, first, the transmission of rotarymotion from one shaft to another by means of cranks on each united by aconnecting-rod, and at the same time ob- Viatin g dead-centers 5 second,the transmission of rotary motion from one shaft to another shaft set atan angle to the former by means of cranks and a connecting-rod; third,the transmission of rotary motion from one shaft to another shaft set atan angle to the former,

by means of cranks and a connecting-rod, and at the same time obviatingdead-centers.

The letter A denotes the shaft from which poweris com municated,whichIterm the drivin g-shaft, and B denotes the crank thereof as a whole,made up of the crank-arms b and crank-pin b. The letter C denotes theshaft to which power and motion are communicated, which I term thedriven shaft, in the pres ent instance set at right angles to thedrivingshaft. The letter D denotes the crank of the driven shaft, madeup of the crank-arms d and the crank-pin d.

The letter E denotes the connecting-rod attached to both cranks by auniversal joint. The ends are bifurcated into forks c, which are pivotedon the trunnionsf appurtenant-to the boxes F, which inclose and are hungupon the crank-pins. These universal joints permit the driven shaft tobe set at an angle to the driving-shaft.

The letter C denotes an'eccentric disk rigidly fixed upon thedriving-shaft. g denotes the strap thereof. The letter H denotes acorresponding eccentric on the driven shaft, and h denotes the strapthereof. The strap 9 is pro vided with trunnions g, and the strap h withcorresponding trunnions h. o

The letter 1 denotes a rod, bifurcated at each end into forks i, whichare-each set of bifurcations respectivelypivotedon the trunnions g andh, and the eccentrics are so set upon their respective shafts that whenthe cranks are on dead-centers the eccentrics are not, and will therebykeep up the transmission of power and motion.

When the two shafts are not set at an angle to each other theconnectingrod I does not need'to be pivoted to the straps, but may berigid therewith neither, in such case, does the connecting-rod E need tobe pivotally connected to the boxes F.

I claim as my invention- 5 1. In combination, the driving-shaft, withits crank, the driven shaft, set at anangle to the driving-shaft, withits crank, and the connecting-rod between the cranks, attached to bothby a universal joint, all substantially as described, and for thepurposes set fort-h.

2. In combination, the driving-shaft, with its crank andeccentric, thedriven shaft, set at an angle to the driving-shaft, with its crank andeccentric, the connecting-rod attached to both cranks by a universaljoint, and the connecting-rod pivotally attached to the eccentricstraps, all substantially as described, and for the purposes set forth.

JAMES E. UNDERWOOD.

Witnesses:

CHARLES A. HAWKINS, G. FRANK UHLER.

